linux-kernel - [PATCH v2 2/2] dt: bindings: add dt entry for ath10k default BDF name

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Date:   Mon, 10 Jan 2022 23:14:15 +0000
From:   Abhishek Kumar <kuabhs@...omium.org>
To:     kvalo@...eaurora.org, ath10k@...ts.infradead.org
Cc:     pillair@...eaurora.org, linux-wireless@...r.kernel.org,
        linux-kernel@...r.kernel.org, kuabhs@...omium.org,
        dianders@...omium.org, "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Kalle Valo <kvalo@...nel.org>,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        netdev@...r.kernel.org
Subject: [PATCH v2 2/2] dt: bindings: add dt entry for ath10k default BDF name

It is possible that BDF name with board-id+chip-id+variant
combination is not found in the board-2.bin. Such cases can
cause wlan probe to fail and completely break wifi. In such
case there can be an optional property to define a default
BDF name to search for in the board-2.bin file when none of
the combinations (board-id,chip-id,variant) match.
To address the above concern provide an optional proptery:
qcom,ath10k-default-bdf

Signed-off-by: Abhishek Kumar <kuabhs@...omium.org>
---

Changes in v2:
 - Changes in v2: none

 .../devicetree/bindings/net/wireless/qcom,ath10k.txt          | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/wireless/qcom,ath10k.txt b/Documentation/devicetree/bindings/net/wireless/qcom,ath10k.txt
index b61c2d5a0ff7..d76d1392863d 100644
--- a/Documentation/devicetree/bindings/net/wireless/qcom,ath10k.txt
+++ b/Documentation/devicetree/bindings/net/wireless/qcom,ath10k.txt
@@ -63,6 +63,10 @@ Optional properties:
 				 hw versions.
 - qcom,ath10k-pre-calibration-data : pre calibration data as an array,
 				     the length can vary between hw versions.
+- qcom,ath10k-default-bdf : default board data file name to be searched in
+			    board-2.bin. This is searched if no BDF is found
+			    in board-2.bin that matches, chip-id, board-id and
+			    variant combination
 - <supply-name>-supply: handle to the regulator device tree node
 			   optional "supply-name" are "vdd-0.8-cx-mx",
 			   "vdd-1.8-xo", "vdd-1.3-rfa", "vdd-3.3-ch0",
-- 
2.34.1.575.g55b058a8bb-goog